2 Unix SMB/CIFS implementation.
3 Samba utility functions
4 Copyright (C) Andrew Tridgell 1992-1998
5 Copyright (C) Jeremy Allison 2001-2007
6 Copyright (C) Simo Sorce 2001
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
8 Copyright (C) James Peach 2006
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 extern char *global_clobber_region_function
;
27 extern unsigned int global_clobber_region_line
;
29 /* Max allowable allococation - 256mb - 0x10000000 */
30 #define MAX_ALLOC_SIZE (1024*1024*256)
32 #if (defined(HAVE_NETGROUP) && defined (WITH_AUTOMOUNT))
33 #ifdef WITH_NISPLUS_HOME
34 #ifdef BROKEN_NISPLUS_INCLUDE_FILES
36 * The following lines are needed due to buggy include files
37 * in Solaris 2.6 which define GROUP in both /usr/include/sys/acl.h and
38 * also in /usr/include/rpcsvc/nis.h. The definitions conflict. JRA.
39 * Also GROUP_OBJ is defined as 0x4 in /usr/include/sys/acl.h and as
40 * an enum in /usr/include/rpcsvc/nis.h.
47 #if defined(GROUP_OBJ)
51 #endif /* BROKEN_NISPLUS_INCLUDE_FILES */
53 #include <rpcsvc/nis.h>
55 #endif /* WITH_NISPLUS_HOME */
56 #endif /* HAVE_NETGROUP && WITH_AUTOMOUNT */
58 enum protocol_types Protocol
= PROTOCOL_COREPLUS
;
60 static enum remote_arch_types ra_type
= RA_UNKNOWN
;
62 /***********************************************************************
63 Definitions for all names.
64 ***********************************************************************/
66 static char *smb_myname
;
67 static char *smb_myworkgroup
;
68 static char *smb_scope
;
69 static int smb_num_netbios_names
;
70 static char **smb_my_netbios_names
;
72 /***********************************************************************
73 Allocate and set myname. Ensure upper case.
74 ***********************************************************************/
76 bool set_global_myname(const char *myname
)
78 SAFE_FREE(smb_myname
);
79 smb_myname
= SMB_STRDUP(myname
);
82 strupper_m(smb_myname
);
86 const char *global_myname(void)
91 /***********************************************************************
92 Allocate and set myworkgroup. Ensure upper case.
93 ***********************************************************************/
95 bool set_global_myworkgroup(const char *myworkgroup
)
97 SAFE_FREE(smb_myworkgroup
);
98 smb_myworkgroup
= SMB_STRDUP(myworkgroup
);
101 strupper_m(smb_myworkgroup
);
105 const char *lp_workgroup(void)
107 return smb_myworkgroup
;
110 /***********************************************************************
111 Allocate and set scope. Ensure upper case.
112 ***********************************************************************/
114 bool set_global_scope(const char *scope
)
116 SAFE_FREE(smb_scope
);
117 smb_scope
= SMB_STRDUP(scope
);
120 strupper_m(smb_scope
);
124 /*********************************************************************
125 Ensure scope is never null string.
126 *********************************************************************/
128 const char *global_scope(void)
131 set_global_scope("");
135 static void free_netbios_names_array(void)
139 for (i
= 0; i
< smb_num_netbios_names
; i
++)
140 SAFE_FREE(smb_my_netbios_names
[i
]);
142 SAFE_FREE(smb_my_netbios_names
);
143 smb_num_netbios_names
= 0;
146 static bool allocate_my_netbios_names_array(size_t number
)
148 free_netbios_names_array();
150 smb_num_netbios_names
= number
+ 1;
151 smb_my_netbios_names
= SMB_MALLOC_ARRAY( char *, smb_num_netbios_names
);
153 if (!smb_my_netbios_names
)
156 memset(smb_my_netbios_names
, '\0', sizeof(char *) * smb_num_netbios_names
);
160 static bool set_my_netbios_names(const char *name
, int i
)
162 SAFE_FREE(smb_my_netbios_names
[i
]);
164 smb_my_netbios_names
[i
] = SMB_STRDUP(name
);
165 if (!smb_my_netbios_names
[i
])
167 strupper_m(smb_my_netbios_names
[i
]);
171 /***********************************************************************
172 Free memory allocated to global objects
173 ***********************************************************************/
175 void gfree_names(void)
177 SAFE_FREE( smb_myname
);
178 SAFE_FREE( smb_myworkgroup
);
179 SAFE_FREE( smb_scope
);
180 free_netbios_names_array();
181 free_local_machine_name();
184 void gfree_all( void )
194 const char *my_netbios_names(int i
)
196 return smb_my_netbios_names
[i
];
199 bool set_netbios_aliases(const char **str_array
)
203 /* Work out the max number of netbios aliases that we have */
204 for( namecount
=0; str_array
&& (str_array
[namecount
] != NULL
); namecount
++ )
207 if ( global_myname() && *global_myname())
210 /* Allocate space for the netbios aliases */
211 if (!allocate_my_netbios_names_array(namecount
))
214 /* Use the global_myname string first */
216 if ( global_myname() && *global_myname()) {
217 set_my_netbios_names( global_myname(), namecount
);
223 for ( i
= 0; str_array
[i
] != NULL
; i
++) {
225 bool duplicate
= False
;
227 /* Look for duplicates */
228 for( n
=0; n
<namecount
; n
++ ) {
229 if( strequal( str_array
[i
], my_netbios_names(n
) ) ) {
235 if (!set_my_netbios_names(str_array
[i
], namecount
))
244 /****************************************************************************
245 Common name initialization code.
246 ****************************************************************************/
248 bool init_names(void)
252 if (global_myname() == NULL
|| *global_myname() == '\0') {
253 if (!set_global_myname(myhostname())) {
254 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
259 if (!set_netbios_aliases(lp_netbios_aliases())) {
260 DEBUG( 0, ( "init_structs: malloc fail.\n" ) );
264 set_local_machine_name(global_myname(),false);
266 DEBUG( 5, ("Netbios name list:-\n") );
267 for( n
=0; my_netbios_names(n
); n
++ ) {
268 DEBUGADD( 5, ("my_netbios_names[%d]=\"%s\"\n",
269 n
, my_netbios_names(n
) ) );
275 /**************************************************************************n
276 Code to cope with username/password auth options from the commandline.
277 Used mainly in client tools.
278 ****************************************************************************/
280 struct user_auth_info
*user_auth_info_init(TALLOC_CTX
*mem_ctx
)
282 struct user_auth_info
*result
;
284 result
= TALLOC_ZERO_P(mem_ctx
, struct user_auth_info
);
285 if (result
== NULL
) {
289 result
->signing_state
= Undefined
;
293 const char *get_cmdline_auth_info_username(const struct user_auth_info
*auth_info
)
295 if (!auth_info
->username
) {
298 return auth_info
->username
;
301 void set_cmdline_auth_info_username(struct user_auth_info
*auth_info
,
302 const char *username
)
304 TALLOC_FREE(auth_info
->username
);
305 auth_info
->username
= talloc_strdup(auth_info
, username
);
306 if (!auth_info
->username
) {
311 const char *get_cmdline_auth_info_password(const struct user_auth_info
*auth_info
)
313 if (!auth_info
->password
) {
316 return auth_info
->password
;
319 void set_cmdline_auth_info_password(struct user_auth_info
*auth_info
,
320 const char *password
)
322 TALLOC_FREE(auth_info
->password
);
323 if (password
== NULL
) {
326 auth_info
->password
= talloc_strdup(auth_info
, password
);
327 if (!auth_info
->password
) {
330 auth_info
->got_pass
= true;
333 bool set_cmdline_auth_info_signing_state(struct user_auth_info
*auth_info
,
336 auth_info
->signing_state
= -1;
337 if (strequal(arg
, "off") || strequal(arg
, "no") ||
338 strequal(arg
, "false")) {
339 auth_info
->signing_state
= false;
340 } else if (strequal(arg
, "on") || strequal(arg
, "yes") ||
341 strequal(arg
, "true") || strequal(arg
, "auto")) {
342 auth_info
->signing_state
= true;
343 } else if (strequal(arg
, "force") || strequal(arg
, "required") ||
344 strequal(arg
, "forced")) {
345 auth_info
->signing_state
= Required
;
352 int get_cmdline_auth_info_signing_state(const struct user_auth_info
*auth_info
)
354 return auth_info
->signing_state
;
357 void set_cmdline_auth_info_use_kerberos(struct user_auth_info
*auth_info
,
360 auth_info
->use_kerberos
= b
;
363 bool get_cmdline_auth_info_use_kerberos(const struct user_auth_info
*auth_info
)
365 return auth_info
->use_kerberos
;
368 void set_cmdline_auth_info_fallback_after_kerberos(struct user_auth_info
*auth_info
,
371 auth_info
->fallback_after_kerberos
= b
;
374 bool get_cmdline_auth_info_fallback_after_kerberos(const struct user_auth_info
*auth_info
)
376 return auth_info
->fallback_after_kerberos
;
379 /* This should only be used by lib/popt_common.c JRA */
380 void set_cmdline_auth_info_use_krb5_ticket(struct user_auth_info
*auth_info
)
382 auth_info
->use_kerberos
= true;
383 auth_info
->got_pass
= true;
386 /* This should only be used by lib/popt_common.c JRA */
387 void set_cmdline_auth_info_smb_encrypt(struct user_auth_info
*auth_info
)
389 auth_info
->smb_encrypt
= true;
392 void set_cmdline_auth_info_use_machine_account(struct user_auth_info
*auth_info
)
394 auth_info
->use_machine_account
= true;
397 bool get_cmdline_auth_info_got_pass(const struct user_auth_info
*auth_info
)
399 return auth_info
->got_pass
;
402 bool get_cmdline_auth_info_smb_encrypt(const struct user_auth_info
*auth_info
)
404 return auth_info
->smb_encrypt
;
407 bool get_cmdline_auth_info_use_machine_account(const struct user_auth_info
*auth_info
)
409 return auth_info
->use_machine_account
;
412 struct user_auth_info
*get_cmdline_auth_info_copy(TALLOC_CTX
*mem_ctx
,
413 const struct user_auth_info
*src
)
415 struct user_auth_info
*result
;
417 result
= user_auth_info_init(mem_ctx
);
418 if (result
== NULL
) {
424 result
->username
= talloc_strdup(
425 result
, get_cmdline_auth_info_username(src
));
426 result
->password
= talloc_strdup(
427 result
, get_cmdline_auth_info_password(src
));
428 if ((result
->username
== NULL
) || (result
->password
== NULL
)) {
436 bool set_cmdline_auth_info_machine_account_creds(struct user_auth_info
*auth_info
)
439 char *account
= NULL
;
441 if (!get_cmdline_auth_info_use_machine_account(auth_info
)) {
445 if (!secrets_init()) {
446 d_printf("ERROR: Unable to open secrets database\n");
450 if (asprintf(&account
, "%s$@%s", global_myname(), lp_realm()) < 0) {
454 pass
= secrets_fetch_machine_password(lp_workgroup(), NULL
, NULL
);
456 d_printf("ERROR: Unable to fetch machine password for "
458 account
, lp_workgroup());
463 set_cmdline_auth_info_username(auth_info
, account
);
464 set_cmdline_auth_info_password(auth_info
, pass
);
472 /****************************************************************************
473 Ensure we have a password if one not given.
474 ****************************************************************************/
476 void set_cmdline_auth_info_getpass(struct user_auth_info
*auth_info
)
482 if (get_cmdline_auth_info_got_pass(auth_info
) ||
483 get_cmdline_auth_info_use_kerberos(auth_info
)) {
484 /* Already got one... */
488 frame
= talloc_stackframe();
489 label
= talloc_asprintf(frame
, "Enter %s's password: ",
490 get_cmdline_auth_info_username(auth_info
));
491 pass
= getpass(label
);
493 set_cmdline_auth_info_password(auth_info
, pass
);
498 /*******************************************************************
499 Check if a file exists - call vfs_file_exist for samba files.
500 ********************************************************************/
502 bool file_exist_stat(const char *fname
,SMB_STRUCT_STAT
*sbuf
)
508 if (sys_stat(fname
,sbuf
) != 0)
511 return((S_ISREG(sbuf
->st_ex_mode
)) || (S_ISFIFO(sbuf
->st_ex_mode
)));
514 /*******************************************************************
515 Check if a unix domain socket exists - call vfs_file_exist for samba files.
516 ********************************************************************/
518 bool socket_exist(const char *fname
)
521 if (sys_stat(fname
,&st
) != 0)
524 return S_ISSOCK(st
.st_ex_mode
);
527 /*******************************************************************
528 Check if a directory exists.
529 ********************************************************************/
531 bool directory_exist_stat(char *dname
,SMB_STRUCT_STAT
*st
)
539 if (sys_stat(dname
,st
) != 0)
542 ret
= S_ISDIR(st
->st_ex_mode
);
548 /*******************************************************************
549 Returns the size in bytes of the named given the stat struct.
550 ********************************************************************/
552 uint64_t get_file_size_stat(const SMB_STRUCT_STAT
*sbuf
)
554 return sbuf
->st_ex_size
;
557 /*******************************************************************
558 Returns the size in bytes of the named file.
559 ********************************************************************/
561 SMB_OFF_T
get_file_size(char *file_name
)
565 if(sys_stat(file_name
,&buf
) != 0)
566 return (SMB_OFF_T
)-1;
567 return get_file_size_stat(&buf
);
570 /*******************************************************************
571 Return a string representing an attribute for a file.
572 ********************************************************************/
574 char *attrib_string(uint16 mode
)
580 if (mode
& aVOLID
) fstrcat(attrstr
,"V");
581 if (mode
& aDIR
) fstrcat(attrstr
,"D");
582 if (mode
& aARCH
) fstrcat(attrstr
,"A");
583 if (mode
& aHIDDEN
) fstrcat(attrstr
,"H");
584 if (mode
& aSYSTEM
) fstrcat(attrstr
,"S");
585 if (mode
& aRONLY
) fstrcat(attrstr
,"R");
587 return talloc_strdup(talloc_tos(), attrstr
);
590 /*******************************************************************
591 Show a smb message structure.
592 ********************************************************************/
594 void show_msg(char *buf
)
602 DEBUG(5,("size=%d\nsmb_com=0x%x\nsmb_rcls=%d\nsmb_reh=%d\nsmb_err=%d\nsmb_flg=%d\nsmb_flg2=%d\n",
604 (int)CVAL(buf
,smb_com
),
605 (int)CVAL(buf
,smb_rcls
),
606 (int)CVAL(buf
,smb_reh
),
607 (int)SVAL(buf
,smb_err
),
608 (int)CVAL(buf
,smb_flg
),
609 (int)SVAL(buf
,smb_flg2
)));
610 DEBUGADD(5,("smb_tid=%d\nsmb_pid=%d\nsmb_uid=%d\nsmb_mid=%d\n",
611 (int)SVAL(buf
,smb_tid
),
612 (int)SVAL(buf
,smb_pid
),
613 (int)SVAL(buf
,smb_uid
),
614 (int)SVAL(buf
,smb_mid
)));
615 DEBUGADD(5,("smt_wct=%d\n",(int)CVAL(buf
,smb_wct
)));
617 for (i
=0;i
<(int)CVAL(buf
,smb_wct
);i
++)
618 DEBUGADD(5,("smb_vwv[%2d]=%5d (0x%X)\n",i
,
619 SVAL(buf
,smb_vwv
+2*i
),SVAL(buf
,smb_vwv
+2*i
)));
621 bcc
= (int)SVAL(buf
,smb_vwv
+2*(CVAL(buf
,smb_wct
)));
623 DEBUGADD(5,("smb_bcc=%d\n",bcc
));
631 dump_data(10, (uint8
*)smb_buf(buf
), bcc
);
634 /*******************************************************************
635 Set the length and marker of an encrypted smb packet.
636 ********************************************************************/
638 void smb_set_enclen(char *buf
,int len
,uint16 enc_ctx_num
)
640 _smb_setlen(buf
,len
);
644 SSVAL(buf
,6,enc_ctx_num
);
647 /*******************************************************************
648 Set the length and marker of an smb packet.
649 ********************************************************************/
651 void smb_setlen(char *buf
,int len
)
653 _smb_setlen(buf
,len
);
661 /*******************************************************************
662 Setup only the byte count for a smb message.
663 ********************************************************************/
665 int set_message_bcc(char *buf
,int num_bytes
)
667 int num_words
= CVAL(buf
,smb_wct
);
668 SSVAL(buf
,smb_vwv
+ num_words
*SIZEOFWORD
,num_bytes
);
669 _smb_setlen(buf
,smb_size
+ num_words
*2 + num_bytes
- 4);
670 return (smb_size
+ num_words
*2 + num_bytes
);
673 /*******************************************************************
674 Add a data blob to the end of a smb_buf, adjusting bcc and smb_len.
675 Return the bytes added
676 ********************************************************************/
678 ssize_t
message_push_blob(uint8
**outbuf
, DATA_BLOB blob
)
680 size_t newlen
= smb_len(*outbuf
) + 4 + blob
.length
;
683 if (!(tmp
= TALLOC_REALLOC_ARRAY(NULL
, *outbuf
, uint8
, newlen
))) {
684 DEBUG(0, ("talloc failed\n"));
689 memcpy(tmp
+ smb_len(tmp
) + 4, blob
.data
, blob
.length
);
690 set_message_bcc((char *)tmp
, smb_buflen(tmp
) + blob
.length
);
694 /*******************************************************************
695 Reduce a file name, removing .. elements.
696 ********************************************************************/
698 static char *dos_clean_name(TALLOC_CTX
*ctx
, const char *s
)
703 DEBUG(3,("dos_clean_name [%s]\n",s
));
705 /* remove any double slashes */
706 str
= talloc_all_string_sub(ctx
, s
, "\\\\", "\\");
711 /* Remove leading .\\ characters */
712 if(strncmp(str
, ".\\", 2) == 0) {
713 trim_string(str
, ".\\", NULL
);
715 str
= talloc_strdup(ctx
, ".\\");
722 while ((p
= strstr_m(str
,"\\..\\")) != NULL
) {
728 if ((p
=strrchr_m(str
,'\\')) != NULL
) {
733 str
= talloc_asprintf(ctx
,
742 trim_string(str
,NULL
,"\\..");
743 return talloc_all_string_sub(ctx
, str
, "\\.\\", "\\");
746 /*******************************************************************
747 Reduce a file name, removing .. elements.
748 ********************************************************************/
750 char *unix_clean_name(TALLOC_CTX
*ctx
, const char *s
)
755 DEBUG(3,("unix_clean_name [%s]\n",s
));
757 /* remove any double slashes */
758 str
= talloc_all_string_sub(ctx
, s
, "//","/");
763 /* Remove leading ./ characters */
764 if(strncmp(str
, "./", 2) == 0) {
765 trim_string(str
, "./", NULL
);
767 str
= talloc_strdup(ctx
, "./");
774 while ((p
= strstr_m(str
,"/../")) != NULL
) {
780 if ((p
=strrchr_m(str
,'/')) != NULL
) {
785 str
= talloc_asprintf(ctx
,
794 trim_string(str
,NULL
,"/..");
795 return talloc_all_string_sub(ctx
, str
, "/./", "/");
798 char *clean_name(TALLOC_CTX
*ctx
, const char *s
)
800 char *str
= dos_clean_name(ctx
, s
);
804 return unix_clean_name(ctx
, str
);
807 /*******************************************************************
808 Write data into an fd at a given offset. Ignore seek errors.
809 ********************************************************************/
811 ssize_t
write_data_at_offset(int fd
, const char *buffer
, size_t N
, SMB_OFF_T pos
)
816 if (pos
== (SMB_OFF_T
)-1) {
817 return write_data(fd
, buffer
, N
);
819 #if defined(HAVE_PWRITE) || defined(HAVE_PRWITE64)
821 ret
= sys_pwrite(fd
,buffer
+ total
,N
- total
, pos
);
822 if (ret
== -1 && errno
== ESPIPE
) {
823 return write_data(fd
, buffer
+ total
,N
- total
);
826 DEBUG(0,("write_data_at_offset: write failure. Error = %s\n", strerror(errno
) ));
835 return (ssize_t
)total
;
837 /* Use lseek and write_data. */
838 if (sys_lseek(fd
, pos
, SEEK_SET
) == -1) {
839 if (errno
!= ESPIPE
) {
843 return write_data(fd
, buffer
, N
);
847 /*******************************************************************
848 Sleep for a specified number of milliseconds.
849 ********************************************************************/
851 void smb_msleep(unsigned int t
)
853 #if defined(HAVE_NANOSLEEP)
854 struct timespec tval
;
857 tval
.tv_sec
= t
/1000;
858 tval
.tv_nsec
= 1000000*(t
%1000);
862 ret
= nanosleep(&tval
, &tval
);
863 } while (ret
< 0 && errno
== EINTR
&& (tval
.tv_sec
> 0 || tval
.tv_nsec
> 0));
865 unsigned int tdiff
=0;
866 struct timeval tval
,t1
,t2
;
873 tval
.tv_sec
= (t
-tdiff
)/1000;
874 tval
.tv_usec
= 1000*((t
-tdiff
)%1000);
876 /* Never wait for more than 1 sec. */
877 if (tval
.tv_sec
> 1) {
884 sys_select_intr(0,&fds
,NULL
,NULL
,&tval
);
887 if (t2
.tv_sec
< t1
.tv_sec
) {
888 /* Someone adjusted time... */
892 tdiff
= TvalDiff(&t1
,&t2
);
897 NTSTATUS
reinit_after_fork(struct messaging_context
*msg_ctx
,
898 struct event_context
*ev_ctx
,
899 bool parent_longlived
)
901 NTSTATUS status
= NT_STATUS_OK
;
903 /* Reset the state of the random
904 * number generation system, so
905 * children do not get the same random
906 * numbers as each other */
907 set_need_random_reseed();
909 /* tdb needs special fork handling */
910 if (tdb_reopen_all(parent_longlived
? 1 : 0) == -1) {
911 DEBUG(0,("tdb_reopen_all failed.\n"));
912 status
= NT_STATUS_OPEN_FAILED
;
917 event_context_reinit(ev_ctx
);
922 * For clustering, we need to re-init our ctdbd connection after the
925 status
= messaging_reinit(msg_ctx
);
926 if (!NT_STATUS_IS_OK(status
)) {
927 DEBUG(0,("messaging_reinit() failed: %s\n",
935 /****************************************************************************
936 Put up a yes/no prompt.
937 ****************************************************************************/
939 bool yesno(const char *p
)
944 if (!fgets(ans
,sizeof(ans
)-1,stdin
))
947 if (*ans
== 'y' || *ans
== 'Y')
953 #if defined(PARANOID_MALLOC_CHECKER)
955 /****************************************************************************
956 Internal malloc wrapper. Externally visible.
957 ****************************************************************************/
959 void *malloc_(size_t size
)
966 #define malloc(s) __ERROR_DONT_USE_MALLOC_DIRECTLY
969 /****************************************************************************
970 Internal calloc wrapper. Not externally visible.
971 ****************************************************************************/
973 static void *calloc_(size_t count
, size_t size
)
975 if (size
== 0 || count
== 0) {
979 return calloc(count
, size
);
980 #define calloc(n,s) __ERROR_DONT_USE_CALLOC_DIRECTLY
983 /****************************************************************************
984 Internal realloc wrapper. Not externally visible.
985 ****************************************************************************/
987 static void *realloc_(void *ptr
, size_t size
)
990 return realloc(ptr
, size
);
991 #define realloc(p,s) __ERROR_DONT_USE_RELLOC_DIRECTLY
994 #endif /* PARANOID_MALLOC_CHECKER */
996 /****************************************************************************
998 ****************************************************************************/
1000 void *memalign_array(size_t el_size
, size_t align
, unsigned int count
)
1002 if (count
>= MAX_ALLOC_SIZE
/el_size
) {
1006 return sys_memalign(align
, el_size
*count
);
1009 /****************************************************************************
1011 ****************************************************************************/
1013 void *calloc_array(size_t size
, size_t nmemb
)
1015 if (nmemb
>= MAX_ALLOC_SIZE
/size
) {
1018 if (size
== 0 || nmemb
== 0) {
1021 #if defined(PARANOID_MALLOC_CHECKER)
1022 return calloc_(nmemb
, size
);
1024 return calloc(nmemb
, size
);
1028 /****************************************************************************
1029 Expand a pointer to be a particular size.
1030 Note that this version of Realloc has an extra parameter that decides
1031 whether to free the passed in storage on allocation failure or if the
1034 This is designed for use in the typical idiom of :
1036 p = SMB_REALLOC(p, size)
1041 and not to have to keep track of the old 'p' contents to free later, nor
1042 to worry if the size parameter was zero. In the case where NULL is returned
1043 we guarentee that p has been freed.
1045 If free later semantics are desired, then pass 'free_old_on_error' as False which
1046 guarentees that the old contents are not freed on error, even if size == 0. To use
1049 tmp = SMB_REALLOC_KEEP_OLD_ON_ERROR(p, size);
1057 Changes were instigated by Coverity error checking. JRA.
1058 ****************************************************************************/
1060 void *Realloc(void *p
, size_t size
, bool free_old_on_error
)
1065 if (free_old_on_error
) {
1068 DEBUG(2,("Realloc asked for 0 bytes\n"));
1072 #if defined(PARANOID_MALLOC_CHECKER)
1074 ret
= (void *)malloc_(size
);
1076 ret
= (void *)realloc_(p
,size
);
1080 ret
= (void *)malloc(size
);
1082 ret
= (void *)realloc(p
,size
);
1087 if (free_old_on_error
&& p
) {
1090 DEBUG(0,("Memory allocation error: failed to expand to %d bytes\n",(int)size
));
1096 /****************************************************************************
1097 (Hopefully) efficient array append.
1098 ****************************************************************************/
1100 void add_to_large_array(TALLOC_CTX
*mem_ctx
, size_t element_size
,
1101 void *element
, void *_array
, uint32
*num_elements
,
1102 ssize_t
*array_size
)
1104 void **array
= (void **)_array
;
1106 if (*array_size
< 0) {
1110 if (*array
== NULL
) {
1111 if (*array_size
== 0) {
1115 if (*array_size
>= MAX_ALLOC_SIZE
/element_size
) {
1119 *array
= TALLOC(mem_ctx
, element_size
* (*array_size
));
1120 if (*array
== NULL
) {
1125 if (*num_elements
== *array_size
) {
1128 if (*array_size
>= MAX_ALLOC_SIZE
/element_size
) {
1132 *array
= TALLOC_REALLOC(mem_ctx
, *array
,
1133 element_size
* (*array_size
));
1135 if (*array
== NULL
) {
1140 memcpy((char *)(*array
) + element_size
*(*num_elements
),
1141 element
, element_size
);
1151 /****************************************************************************
1152 Get my own domain name, or "" if we have none.
1153 ****************************************************************************/
1155 char *get_mydnsdomname(TALLOC_CTX
*ctx
)
1157 const char *domname
;
1160 domname
= get_mydnsfullname();
1165 p
= strchr_m(domname
, '.');
1168 return talloc_strdup(ctx
, p
);
1170 return talloc_strdup(ctx
, "");
1174 /****************************************************************************
1175 Interpret a protocol description string, with a default.
1176 ****************************************************************************/
1178 int interpret_protocol(const char *str
,int def
)
1180 if (strequal(str
,"NT1"))
1181 return(PROTOCOL_NT1
);
1182 if (strequal(str
,"LANMAN2"))
1183 return(PROTOCOL_LANMAN2
);
1184 if (strequal(str
,"LANMAN1"))
1185 return(PROTOCOL_LANMAN1
);
1186 if (strequal(str
,"CORE"))
1187 return(PROTOCOL_CORE
);
1188 if (strequal(str
,"COREPLUS"))
1189 return(PROTOCOL_COREPLUS
);
1190 if (strequal(str
,"CORE+"))
1191 return(PROTOCOL_COREPLUS
);
1193 DEBUG(0,("Unrecognised protocol level %s\n",str
));
1199 #if (defined(HAVE_NETGROUP) && defined(WITH_AUTOMOUNT))
1200 /******************************************************************
1201 Remove any mount options such as -rsize=2048,wsize=2048 etc.
1202 Based on a fix from <Thomas.Hepper@icem.de>.
1203 Returns a malloc'ed string.
1204 *******************************************************************/
1206 static char *strip_mount_options(TALLOC_CTX
*ctx
, const char *str
)
1209 const char *p
= str
;
1210 while(*p
&& !isspace(*p
))
1212 while(*p
&& isspace(*p
))
1215 return talloc_strdup(ctx
, p
);
1221 /*******************************************************************
1222 Patch from jkf@soton.ac.uk
1223 Split Luke's automount_server into YP lookup and string splitter
1224 so can easily implement automount_path().
1225 Returns a malloc'ed string.
1226 *******************************************************************/
1228 #ifdef WITH_NISPLUS_HOME
1229 char *automount_lookup(TALLOC_CTX
*ctx
, const char *user_name
)
1233 char *nis_map
= (char *)lp_nis_home_map_name();
1235 char buffer
[NIS_MAXATTRVAL
+ 1];
1240 snprintf(buffer
, sizeof(buffer
), "[key=%s],%s", user_name
, nis_map
);
1241 DEBUG(5, ("NIS+ querystring: %s\n", buffer
));
1243 if (result
= nis_list(buffer
, FOLLOW_PATH
|EXPAND_NAME
|HARD_LOOKUP
, NULL
, NULL
)) {
1244 if (result
->status
!= NIS_SUCCESS
) {
1245 DEBUG(3, ("NIS+ query failed: %s\n", nis_sperrno(result
->status
)));
1247 object
= result
->objects
.objects_val
;
1248 if (object
->zo_data
.zo_type
== ENTRY_OBJ
) {
1249 entry
= &object
->zo_data
.objdata_u
.en_data
;
1250 DEBUG(5, ("NIS+ entry type: %s\n", entry
->en_type
));
1251 DEBUG(3, ("NIS+ result: %s\n", entry
->en_cols
.en_cols_val
[1].ec_value
.ec_value_val
));
1253 value
= talloc_strdup(ctx
,
1254 entry
->en_cols
.en_cols_val
[1].ec_value
.ec_value_val
);
1256 nis_freeresult(result
);
1259 value
= talloc_string_sub(ctx
,
1266 nis_freeresult(result
);
1269 value
= strip_mount_options(ctx
, value
);
1270 DEBUG(4, ("NIS+ Lookup: %s resulted in %s\n",
1275 #else /* WITH_NISPLUS_HOME */
1277 char *automount_lookup(TALLOC_CTX
*ctx
, const char *user_name
)
1281 int nis_error
; /* returned by yp all functions */
1282 char *nis_result
; /* yp_match inits this */
1283 int nis_result_len
; /* and set this */
1284 char *nis_domain
; /* yp_get_default_domain inits this */
1285 char *nis_map
= (char *)lp_nis_home_map_name();
1287 if ((nis_error
= yp_get_default_domain(&nis_domain
)) != 0) {
1288 DEBUG(3, ("YP Error: %s\n", yperr_string(nis_error
)));
1292 DEBUG(5, ("NIS Domain: %s\n", nis_domain
));
1294 if ((nis_error
= yp_match(nis_domain
, nis_map
, user_name
,
1295 strlen(user_name
), &nis_result
,
1296 &nis_result_len
)) == 0) {
1297 value
= talloc_strdup(ctx
, nis_result
);
1301 value
= strip_mount_options(ctx
, value
);
1302 } else if(nis_error
== YPERR_KEY
) {
1303 DEBUG(3, ("YP Key not found: while looking up \"%s\" in map \"%s\"\n",
1304 user_name
, nis_map
));
1305 DEBUG(3, ("using defaults for server and home directory\n"));
1307 DEBUG(3, ("YP Error: \"%s\" while looking up \"%s\" in map \"%s\"\n",
1308 yperr_string(nis_error
), user_name
, nis_map
));
1312 DEBUG(4, ("YP Lookup: %s resulted in %s\n", user_name
, value
));
1316 #endif /* WITH_NISPLUS_HOME */
1319 /****************************************************************************
1320 Check if a process exists. Does this work on all unixes?
1321 ****************************************************************************/
1323 bool process_exists(const struct server_id pid
)
1325 if (procid_is_me(&pid
)) {
1329 if (procid_is_local(&pid
)) {
1330 return (kill(pid
.pid
,0) == 0 || errno
!= ESRCH
);
1333 #ifdef CLUSTER_SUPPORT
1334 return ctdbd_process_exists(messaging_ctdbd_connection(), pid
.vnn
,
1341 /*******************************************************************
1342 Convert a uid into a user name.
1343 ********************************************************************/
1345 const char *uidtoname(uid_t uid
)
1347 TALLOC_CTX
*ctx
= talloc_tos();
1349 struct passwd
*pass
= NULL
;
1351 pass
= getpwuid_alloc(ctx
,uid
);
1353 name
= talloc_strdup(ctx
,pass
->pw_name
);
1356 name
= talloc_asprintf(ctx
,
1363 /*******************************************************************
1364 Convert a gid into a group name.
1365 ********************************************************************/
1367 char *gidtoname(gid_t gid
)
1371 grp
= getgrgid(gid
);
1373 return talloc_strdup(talloc_tos(), grp
->gr_name
);
1376 return talloc_asprintf(talloc_tos(),
1382 /*******************************************************************
1383 Convert a user name into a uid.
1384 ********************************************************************/
1386 uid_t
nametouid(const char *name
)
1388 struct passwd
*pass
;
1392 pass
= getpwnam_alloc(talloc_autofree_context(), name
);
1399 u
= (uid_t
)strtol(name
, &p
, 0);
1400 if ((p
!= name
) && (*p
== '\0'))
1406 /*******************************************************************
1407 Convert a name to a gid_t if possible. Return -1 if not a group.
1408 ********************************************************************/
1410 gid_t
nametogid(const char *name
)
1416 g
= (gid_t
)strtol(name
, &p
, 0);
1417 if ((p
!= name
) && (*p
== '\0'))
1420 grp
= sys_getgrnam(name
);
1422 return(grp
->gr_gid
);
1426 /*******************************************************************
1427 Something really nasty happened - panic !
1428 ********************************************************************/
1430 void smb_panic(const char *const why
)
1438 if (global_clobber_region_function
) {
1439 DEBUG(0,("smb_panic: clobber_region() last called from [%s(%u)]\n",
1440 global_clobber_region_function
,
1441 global_clobber_region_line
));
1446 DEBUG(0,("PANIC (pid %llu): %s\n",
1447 (unsigned long long)sys_getpid(), why
));
1450 cmd
= lp_panic_action();
1452 DEBUG(0, ("smb_panic(): calling panic action [%s]\n", cmd
));
1453 result
= system(cmd
);
1456 DEBUG(0, ("smb_panic(): fork failed in panic action: %s\n",
1459 DEBUG(0, ("smb_panic(): action returned status %d\n",
1460 WEXITSTATUS(result
)));
1466 /*******************************************************************
1467 Print a backtrace of the stack to the debug log. This function
1468 DELIBERATELY LEAKS MEMORY. The expectation is that you should
1469 exit shortly after calling it.
1470 ********************************************************************/
1472 #ifdef HAVE_LIBUNWIND_H
1473 #include <libunwind.h>
1476 #ifdef HAVE_EXECINFO_H
1477 #include <execinfo.h>
1480 #ifdef HAVE_LIBEXC_H
1484 void log_stack_trace(void)
1486 #ifdef HAVE_LIBUNWIND
1487 /* Try to use libunwind before any other technique since on ia64
1488 * libunwind correctly walks the stack in more circumstances than
1491 unw_cursor_t cursor
;
1496 unw_word_t ip
, sp
, off
;
1498 procname
[sizeof(procname
) - 1] = '\0';
1500 if (unw_getcontext(&uc
) != 0) {
1501 goto libunwind_failed
;
1504 if (unw_init_local(&cursor
, &uc
) != 0) {
1505 goto libunwind_failed
;
1508 DEBUG(0, ("BACKTRACE:\n"));
1512 unw_get_reg(&cursor
, UNW_REG_IP
, &ip
);
1513 unw_get_reg(&cursor
, UNW_REG_SP
, &sp
);
1515 switch (unw_get_proc_name(&cursor
,
1516 procname
, sizeof(procname
) - 1, &off
) ) {
1520 /* Name truncated. */
1521 DEBUGADD(0, (" #%u %s + %#llx [ip=%#llx] [sp=%#llx]\n",
1522 i
, procname
, (long long)off
,
1523 (long long)ip
, (long long) sp
));
1526 /* case -UNW_ENOINFO: */
1527 /* case -UNW_EUNSPEC: */
1528 /* No symbol name found. */
1529 DEBUGADD(0, (" #%u %s [ip=%#llx] [sp=%#llx]\n",
1530 i
, "<unknown symbol>",
1531 (long long)ip
, (long long) sp
));
1534 } while (unw_step(&cursor
) > 0);
1539 DEBUG(0, ("unable to produce a stack trace with libunwind\n"));
1541 #elif HAVE_BACKTRACE_SYMBOLS
1542 void *backtrace_stack
[BACKTRACE_STACK_SIZE
];
1543 size_t backtrace_size
;
1544 char **backtrace_strings
;
1546 /* get the backtrace (stack frames) */
1547 backtrace_size
= backtrace(backtrace_stack
,BACKTRACE_STACK_SIZE
);
1548 backtrace_strings
= backtrace_symbols(backtrace_stack
, backtrace_size
);
1550 DEBUG(0, ("BACKTRACE: %lu stack frames:\n",
1551 (unsigned long)backtrace_size
));
1553 if (backtrace_strings
) {
1556 for (i
= 0; i
< backtrace_size
; i
++)
1557 DEBUGADD(0, (" #%u %s\n", i
, backtrace_strings
[i
]));
1559 /* Leak the backtrace_strings, rather than risk what free() might do */
1564 /* The IRIX libexc library provides an API for unwinding the stack. See
1565 * libexc(3) for details. Apparantly trace_back_stack leaks memory, but
1566 * since we are about to abort anyway, it hardly matters.
1569 #define NAMESIZE 32 /* Arbitrary */
1571 __uint64_t addrs
[BACKTRACE_STACK_SIZE
];
1572 char * names
[BACKTRACE_STACK_SIZE
];
1573 char namebuf
[BACKTRACE_STACK_SIZE
* NAMESIZE
];
1580 ZERO_ARRAY(namebuf
);
1582 /* We need to be root so we can open our /proc entry to walk
1583 * our stack. It also helps when we want to dump core.
1587 for (i
= 0; i
< BACKTRACE_STACK_SIZE
; i
++) {
1588 names
[i
] = namebuf
+ (i
* NAMESIZE
);
1591 levels
= trace_back_stack(0, addrs
, names
,
1592 BACKTRACE_STACK_SIZE
, NAMESIZE
- 1);
1594 DEBUG(0, ("BACKTRACE: %d stack frames:\n", levels
));
1595 for (i
= 0; i
< levels
; i
++) {
1596 DEBUGADD(0, (" #%d 0x%llx %s\n", i
, addrs
[i
], names
[i
]));
1601 DEBUG(0, ("unable to produce a stack trace on this platform\n"));
1605 /*******************************************************************
1606 A readdir wrapper which just returns the file name.
1607 ********************************************************************/
1609 const char *readdirname(SMB_STRUCT_DIR
*p
)
1611 SMB_STRUCT_DIRENT
*ptr
;
1617 ptr
= (SMB_STRUCT_DIRENT
*)sys_readdir(p
);
1621 dname
= ptr
->d_name
;
1628 #ifdef HAVE_BROKEN_READDIR_NAME
1629 /* using /usr/ucb/cc is BAD */
1633 return talloc_strdup(talloc_tos(), dname
);
1636 /*******************************************************************
1637 Utility function used to decide if the last component
1638 of a path matches a (possibly wildcarded) entry in a namelist.
1639 ********************************************************************/
1641 bool is_in_path(const char *name
, name_compare_entry
*namelist
, bool case_sensitive
)
1643 const char *last_component
;
1645 /* if we have no list it's obviously not in the path */
1646 if((namelist
== NULL
) || ((namelist
!= NULL
) && (namelist
[0].name
== NULL
))) {
1650 DEBUG(8, ("is_in_path: %s\n", name
));
1652 /* Get the last component of the unix name. */
1653 last_component
= strrchr_m(name
, '/');
1654 if (!last_component
) {
1655 last_component
= name
;
1657 last_component
++; /* Go past '/' */
1660 for(; namelist
->name
!= NULL
; namelist
++) {
1661 if(namelist
->is_wild
) {
1662 if (mask_match(last_component
, namelist
->name
, case_sensitive
)) {
1663 DEBUG(8,("is_in_path: mask match succeeded\n"));
1667 if((case_sensitive
&& (strcmp(last_component
, namelist
->name
) == 0))||
1668 (!case_sensitive
&& (StrCaseCmp(last_component
, namelist
->name
) == 0))) {
1669 DEBUG(8,("is_in_path: match succeeded\n"));
1674 DEBUG(8,("is_in_path: match not found\n"));
1678 /*******************************************************************
1679 Strip a '/' separated list into an array of
1680 name_compare_enties structures suitable for
1681 passing to is_in_path(). We do this for
1682 speed so we can pre-parse all the names in the list
1683 and don't do it for each call to is_in_path().
1684 namelist is modified here and is assumed to be
1685 a copy owned by the caller.
1686 We also check if the entry contains a wildcard to
1687 remove a potentially expensive call to mask_match
1689 ********************************************************************/
1691 void set_namearray(name_compare_entry
**ppname_array
, const char *namelist
)
1694 const char *nameptr
= namelist
;
1695 int num_entries
= 0;
1698 (*ppname_array
) = NULL
;
1700 if((nameptr
== NULL
) || ((nameptr
!= NULL
) && (*nameptr
== '\0')))
1703 /* We need to make two passes over the string. The
1704 first to count the number of elements, the second
1709 if ( *nameptr
== '/' ) {
1710 /* cope with multiple (useless) /s) */
1714 /* find the next / */
1715 name_end
= strchr_m(nameptr
, '/');
1717 /* oops - the last check for a / didn't find one. */
1718 if (name_end
== NULL
)
1721 /* next segment please */
1722 nameptr
= name_end
+ 1;
1726 if(num_entries
== 0)
1729 if(( (*ppname_array
) = SMB_MALLOC_ARRAY(name_compare_entry
, num_entries
+ 1)) == NULL
) {
1730 DEBUG(0,("set_namearray: malloc fail\n"));
1734 /* Now copy out the names */
1738 if ( *nameptr
== '/' ) {
1739 /* cope with multiple (useless) /s) */
1743 /* find the next / */
1744 if ((name_end
= strchr_m(nameptr
, '/')) != NULL
)
1747 /* oops - the last check for a / didn't find one. */
1748 if(name_end
== NULL
)
1751 (*ppname_array
)[i
].is_wild
= ms_has_wild(nameptr
);
1752 if(((*ppname_array
)[i
].name
= SMB_STRDUP(nameptr
)) == NULL
) {
1753 DEBUG(0,("set_namearray: malloc fail (1)\n"));
1757 /* next segment please */
1758 nameptr
= name_end
+ 1;
1762 (*ppname_array
)[i
].name
= NULL
;
1767 /****************************************************************************
1768 Routine to free a namearray.
1769 ****************************************************************************/
1771 void free_namearray(name_compare_entry
*name_array
)
1775 if(name_array
== NULL
)
1778 for(i
=0; name_array
[i
].name
!=NULL
; i
++)
1779 SAFE_FREE(name_array
[i
].name
);
1780 SAFE_FREE(name_array
);
1784 #define DBGC_CLASS DBGC_LOCKING
1786 /****************************************************************************
1787 Simple routine to query existing file locks. Cruft in NFS and 64->32 bit mapping
1788 is dealt with in posix.c
1789 Returns True if we have information regarding this lock region (and returns
1790 F_UNLCK in *ptype if the region is unlocked). False if the call failed.
1791 ****************************************************************************/
1793 bool fcntl_getlock(int fd
, SMB_OFF_T
*poffset
, SMB_OFF_T
*pcount
, int *ptype
, pid_t
*ppid
)
1795 SMB_STRUCT_FLOCK lock
;
1798 DEBUG(8,("fcntl_getlock fd=%d offset=%.0f count=%.0f type=%d\n",
1799 fd
,(double)*poffset
,(double)*pcount
,*ptype
));
1801 lock
.l_type
= *ptype
;
1802 lock
.l_whence
= SEEK_SET
;
1803 lock
.l_start
= *poffset
;
1804 lock
.l_len
= *pcount
;
1807 ret
= sys_fcntl_ptr(fd
,SMB_F_GETLK
,&lock
);
1811 DEBUG(3,("fcntl_getlock: lock request failed at offset %.0f count %.0f type %d (%s)\n",
1812 (double)*poffset
,(double)*pcount
,*ptype
,strerror(errno
)));
1817 *ptype
= lock
.l_type
;
1818 *poffset
= lock
.l_start
;
1819 *pcount
= lock
.l_len
;
1822 DEBUG(3,("fcntl_getlock: fd %d is returned info %d pid %u\n",
1823 fd
, (int)lock
.l_type
, (unsigned int)lock
.l_pid
));
1828 #define DBGC_CLASS DBGC_ALL
1830 /*******************************************************************
1831 Is the name specified one of my netbios names.
1832 Returns true if it is equal, false otherwise.
1833 ********************************************************************/
1835 bool is_myname(const char *s
)
1840 for (n
=0; my_netbios_names(n
); n
++) {
1841 if (strequal(my_netbios_names(n
), s
)) {
1846 DEBUG(8, ("is_myname(\"%s\") returns %d\n", s
, ret
));
1850 /*******************************************************************
1851 Is the name specified our workgroup/domain.
1852 Returns true if it is equal, false otherwise.
1853 ********************************************************************/
1855 bool is_myworkgroup(const char *s
)
1859 if (strequal(s
, lp_workgroup())) {
1863 DEBUG(8, ("is_myworkgroup(\"%s\") returns %d\n", s
, ret
));
1867 /*******************************************************************
1868 we distinguish between 2K and XP by the "Native Lan Manager" string
1869 WinXP => "Windows 2002 5.1"
1870 WinXP 64bit => "Windows XP 5.2"
1871 Win2k => "Windows 2000 5.0"
1872 NT4 => "Windows NT 4.0"
1873 Win9x => "Windows 4.0"
1874 Windows 2003 doesn't set the native lan manager string but
1875 they do set the domain to "Windows 2003 5.2" (probably a bug).
1876 ********************************************************************/
1878 void ra_lanman_string( const char *native_lanman
)
1880 if ( strcmp( native_lanman
, "Windows 2002 5.1" ) == 0 )
1881 set_remote_arch( RA_WINXP
);
1882 else if ( strcmp( native_lanman
, "Windows XP 5.2" ) == 0 )
1883 set_remote_arch( RA_WINXP64
);
1884 else if ( strcmp( native_lanman
, "Windows Server 2003 5.2" ) == 0 )
1885 set_remote_arch( RA_WIN2K3
);
1888 static const char *remote_arch_str
;
1890 const char *get_remote_arch_str(void)
1892 if (!remote_arch_str
) {
1895 return remote_arch_str
;
1898 /*******************************************************************
1899 Set the horrid remote_arch string based on an enum.
1900 ********************************************************************/
1902 void set_remote_arch(enum remote_arch_types type
)
1907 remote_arch_str
= "WfWg";
1910 remote_arch_str
= "OS2";
1913 remote_arch_str
= "Win95";
1916 remote_arch_str
= "WinNT";
1919 remote_arch_str
= "Win2K";
1922 remote_arch_str
= "WinXP";
1925 remote_arch_str
= "WinXP64";
1928 remote_arch_str
= "Win2K3";
1931 remote_arch_str
= "Vista";
1934 remote_arch_str
= "Samba";
1937 remote_arch_str
= "CIFSFS";
1940 ra_type
= RA_UNKNOWN
;
1941 remote_arch_str
= "UNKNOWN";
1945 DEBUG(10,("set_remote_arch: Client arch is \'%s\'\n",
1949 /*******************************************************************
1950 Get the remote_arch type.
1951 ********************************************************************/
1953 enum remote_arch_types
get_remote_arch(void)
1958 const char *tab_depth(int level
, int depth
)
1960 if( CHECK_DEBUGLVL(level
) ) {
1961 dbgtext("%*s", depth
*4, "");
1966 /*****************************************************************************
1967 Provide a checksum on a string
1969 Input: s - the null-terminated character string for which the checksum
1972 Output: The checksum value calculated for s.
1973 *****************************************************************************/
1975 int str_checksum(const char *s
)
1983 res
^= (c
<< (i
% 15)) ^ (c
>> (15-(i
%15)));
1990 /*****************************************************************
1991 Zero a memory area then free it. Used to catch bugs faster.
1992 *****************************************************************/
1994 void zero_free(void *p
, size_t size
)
2000 /*****************************************************************
2001 Set our open file limit to a requested max and return the limit.
2002 *****************************************************************/
2004 int set_maxfiles(int requested_max
)
2006 #if (defined(HAVE_GETRLIMIT) && defined(RLIMIT_NOFILE))
2008 int saved_current_limit
;
2010 if(getrlimit(RLIMIT_NOFILE
, &rlp
)) {
2011 DEBUG(0,("set_maxfiles: getrlimit (1) for RLIMIT_NOFILE failed with error %s\n",
2014 return requested_max
;
2018 * Set the fd limit to be real_max_open_files + MAX_OPEN_FUDGEFACTOR to
2019 * account for the extra fd we need
2020 * as well as the log files and standard
2021 * handles etc. Save the limit we want to set in case
2022 * we are running on an OS that doesn't support this limit (AIX)
2023 * which always returns RLIM_INFINITY for rlp.rlim_max.
2026 /* Try raising the hard (max) limit to the requested amount. */
2028 #if defined(RLIM_INFINITY)
2029 if (rlp
.rlim_max
!= RLIM_INFINITY
) {
2030 int orig_max
= rlp
.rlim_max
;
2032 if ( rlp
.rlim_max
< requested_max
)
2033 rlp
.rlim_max
= requested_max
;
2035 /* This failing is not an error - many systems (Linux) don't
2036 support our default request of 10,000 open files. JRA. */
2038 if(setrlimit(RLIMIT_NOFILE
, &rlp
)) {
2039 DEBUG(3,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d max files failed with error %s\n",
2040 (int)rlp
.rlim_max
, strerror(errno
) ));
2042 /* Set failed - restore original value from get. */
2043 rlp
.rlim_max
= orig_max
;
2048 /* Now try setting the soft (current) limit. */
2050 saved_current_limit
= rlp
.rlim_cur
= MIN(requested_max
,rlp
.rlim_max
);
2052 if(setrlimit(RLIMIT_NOFILE
, &rlp
)) {
2053 DEBUG(0,("set_maxfiles: setrlimit for RLIMIT_NOFILE for %d files failed with error %s\n",
2054 (int)rlp
.rlim_cur
, strerror(errno
) ));
2056 return saved_current_limit
;
2059 if(getrlimit(RLIMIT_NOFILE
, &rlp
)) {
2060 DEBUG(0,("set_maxfiles: getrlimit (2) for RLIMIT_NOFILE failed with error %s\n",
2063 return saved_current_limit
;
2066 #if defined(RLIM_INFINITY)
2067 if(rlp
.rlim_cur
== RLIM_INFINITY
)
2068 return saved_current_limit
;
2071 if((int)rlp
.rlim_cur
> saved_current_limit
)
2072 return saved_current_limit
;
2074 return rlp
.rlim_cur
;
2075 #else /* !defined(HAVE_GETRLIMIT) || !defined(RLIMIT_NOFILE) */
2077 * No way to know - just guess...
2079 return requested_max
;
2083 /*****************************************************************
2084 malloc that aborts with smb_panic on fail or zero size.
2085 *****************************************************************/
2087 void *smb_xmalloc_array(size_t size
, unsigned int count
)
2091 smb_panic("smb_xmalloc_array: called with zero size");
2093 if (count
>= MAX_ALLOC_SIZE
/size
) {
2094 smb_panic("smb_xmalloc_array: alloc size too large");
2096 if ((p
= SMB_MALLOC(size
*count
)) == NULL
) {
2097 DEBUG(0, ("smb_xmalloc_array failed to allocate %lu * %lu bytes\n",
2098 (unsigned long)size
, (unsigned long)count
));
2099 smb_panic("smb_xmalloc_array: malloc failed");
2105 vasprintf that aborts on malloc fail
2108 int smb_xvasprintf(char **ptr
, const char *format
, va_list ap
)
2115 n
= vasprintf(ptr
, format
, ap2
);
2117 if (n
== -1 || ! *ptr
) {
2118 smb_panic("smb_xvasprintf: out of memory");
2123 /*****************************************************************
2124 Get local hostname and cache result.
2125 *****************************************************************/
2127 char *myhostname(void)
2131 /* This is cached forever so
2132 * use talloc_autofree_context() ctx. */
2133 ret
= get_myname(talloc_autofree_context());
2139 * @brief Returns an absolute path to a file concatenating the provided
2140 * @a rootpath and @a basename
2142 * @param name Filename, relative to @a rootpath
2144 * @retval Pointer to a string containing the full path.
2147 static char *xx_path(const char *name
, const char *rootpath
)
2151 fname
= talloc_strdup(talloc_tos(), rootpath
);
2155 trim_string(fname
,"","/");
2157 if (!directory_exist(fname
)) {
2158 if (!mkdir(fname
,0755))
2159 DEBUG(1, ("Unable to create directory %s for file %s. "
2160 "Error was %s\n", fname
, name
, strerror(errno
)));
2163 return talloc_asprintf(talloc_tos(),
2170 * @brief Returns an absolute path to a file in the Samba lock directory.
2172 * @param name File to find, relative to LOCKDIR.
2174 * @retval Pointer to a talloc'ed string containing the full path.
2177 char *lock_path(const char *name
)
2179 return xx_path(name
, lp_lockdir());
2183 * @brief Returns an absolute path to a file in the Samba pid directory.
2185 * @param name File to find, relative to PIDDIR.
2187 * @retval Pointer to a talloc'ed string containing the full path.
2190 char *pid_path(const char *name
)
2192 return xx_path(name
, lp_piddir());
2196 * @brief Returns an absolute path to a file in the Samba lib directory.
2198 * @param name File to find, relative to LIBDIR.
2200 * @retval Pointer to a string containing the full path.
2203 char *lib_path(const char *name
)
2205 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_LIBDIR(), name
);
2209 * @brief Returns an absolute path to a file in the Samba modules directory.
2211 * @param name File to find, relative to MODULESDIR.
2213 * @retval Pointer to a string containing the full path.
2216 char *modules_path(const char *name
)
2218 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_MODULESDIR(), name
);
2222 * @brief Returns an absolute path to a file in the Samba data directory.
2224 * @param name File to find, relative to CODEPAGEDIR.
2226 * @retval Pointer to a talloc'ed string containing the full path.
2229 char *data_path(const char *name
)
2231 return talloc_asprintf(talloc_tos(), "%s/%s", get_dyn_CODEPAGEDIR(), name
);
2235 * @brief Returns an absolute path to a file in the Samba state directory.
2237 * @param name File to find, relative to STATEDIR.
2239 * @retval Pointer to a talloc'ed string containing the full path.
2242 char *state_path(const char *name
)
2244 return xx_path(name
, lp_statedir());
2248 * @brief Returns an absolute path to a file in the Samba cache directory.
2250 * @param name File to find, relative to CACHEDIR.
2252 * @retval Pointer to a talloc'ed string containing the full path.
2255 char *cache_path(const char *name
)
2257 return xx_path(name
, lp_cachedir());
2261 * @brief Returns the platform specific shared library extension.
2263 * @retval Pointer to a const char * containing the extension.
2266 const char *shlib_ext(void)
2268 return get_dyn_SHLIBEXT();
2271 /*******************************************************************
2272 Given a filename - get its directory name
2273 ********************************************************************/
2275 bool parent_dirname(TALLOC_CTX
*mem_ctx
, const char *dir
, char **parent
,
2281 p
= strrchr_m(dir
, '/'); /* Find final '/', if any */
2284 if (!(*parent
= talloc_strdup(mem_ctx
, "."))) {
2295 if (!(*parent
= (char *)TALLOC_MEMDUP(mem_ctx
, dir
, len
+1))) {
2298 (*parent
)[len
] = '\0';
2306 /*******************************************************************
2307 Determine if a pattern contains any Microsoft wildcard characters.
2308 *******************************************************************/
2310 bool ms_has_wild(const char *s
)
2314 if (lp_posix_pathnames()) {
2315 /* With posix pathnames no characters are wild. */
2319 while ((c
= *s
++)) {
2332 bool ms_has_wild_w(const smb_ucs2_t
*s
)
2335 if (!s
) return False
;
2336 while ((c
= *s
++)) {
2338 case UCS2_CHAR('*'):
2339 case UCS2_CHAR('?'):
2340 case UCS2_CHAR('<'):
2341 case UCS2_CHAR('>'):
2342 case UCS2_CHAR('"'):
2349 /*******************************************************************
2350 A wrapper that handles case sensitivity and the special handling
2352 *******************************************************************/
2354 bool mask_match(const char *string
, const char *pattern
, bool is_case_sensitive
)
2356 if (strcmp(string
,"..") == 0)
2358 if (strcmp(pattern
,".") == 0)
2361 return ms_fnmatch(pattern
, string
, Protocol
<= PROTOCOL_LANMAN2
, is_case_sensitive
) == 0;
2364 /*******************************************************************
2365 A wrapper that handles case sensitivity and the special handling
2366 of the ".." name. Varient that is only called by old search code which requires
2367 pattern translation.
2368 *******************************************************************/
2370 bool mask_match_search(const char *string
, const char *pattern
, bool is_case_sensitive
)
2372 if (strcmp(string
,"..") == 0)
2374 if (strcmp(pattern
,".") == 0)
2377 return ms_fnmatch(pattern
, string
, True
, is_case_sensitive
) == 0;
2380 /*******************************************************************
2381 A wrapper that handles a list of patters and calls mask_match()
2382 on each. Returns True if any of the patterns match.
2383 *******************************************************************/
2385 bool mask_match_list(const char *string
, char **list
, int listLen
, bool is_case_sensitive
)
2387 while (listLen
-- > 0) {
2388 if (mask_match(string
, *list
++, is_case_sensitive
))
2394 /*********************************************************
2395 Recursive routine that is called by unix_wild_match.
2396 *********************************************************/
2398 static bool unix_do_match(const char *regexp
, const char *str
)
2402 for( p
= regexp
; *p
&& *str
; ) {
2413 * Look for a character matching
2414 * the one after the '*'.
2418 return true; /* Automatic match */
2421 while(*str
&& (*p
!= *str
))
2425 * Patch from weidel@multichart.de. In the case of the regexp
2426 * '*XX*' we want to ensure there are at least 2 'X' characters
2427 * in the string after the '*' for a match to be made.
2434 * Eat all the characters that match, but count how many there were.
2437 while(*str
&& (*p
== *str
)) {
2443 * Now check that if the regexp had n identical characters that
2444 * matchcount had at least that many matches.
2447 while ( *(p
+1) && (*(p
+1) == *p
)) {
2452 if ( matchcount
<= 0 )
2456 str
--; /* We've eaten the match char after the '*' */
2458 if(unix_do_match(p
, str
))
2480 if (!*p
&& str
[0] == '.' && str
[1] == 0)
2483 if (!*str
&& *p
== '?') {
2489 if(!*str
&& (*p
== '*' && p
[1] == '\0'))
2495 /*******************************************************************
2496 Simple case insensitive interface to a UNIX wildcard matcher.
2497 Returns True if match, False if not.
2498 *******************************************************************/
2500 bool unix_wild_match(const char *pattern
, const char *string
)
2502 TALLOC_CTX
*ctx
= talloc_stackframe();
2508 p2
= talloc_strdup(ctx
,pattern
);
2509 s2
= talloc_strdup(ctx
,string
);
2517 /* Remove any *? and ** from the pattern as they are meaningless */
2518 for(p
= p2
; *p
; p
++) {
2519 while( *p
== '*' && (p
[1] == '?' ||p
[1] == '*')) {
2520 memmove(&p
[1], &p
[2], strlen(&p
[2])+1);
2524 if (strequal(p2
,"*")) {
2529 ret
= unix_do_match(p2
, s2
);
2534 /**********************************************************************
2535 Converts a name to a fully qualified domain name.
2536 Returns true if lookup succeeded, false if not (then fqdn is set to name)
2537 Note we deliberately use gethostbyname here, not getaddrinfo as we want
2538 to examine the h_aliases and I don't know how to do that with getaddrinfo.
2539 ***********************************************************************/
2541 bool name_to_fqdn(fstring fqdn
, const char *name
)
2544 struct hostent
*hp
= gethostbyname(name
);
2546 if (!hp
|| !hp
->h_name
|| !*hp
->h_name
) {
2547 DEBUG(10,("name_to_fqdn: lookup for %s failed.\n", name
));
2548 fstrcpy(fqdn
, name
);
2552 /* Find out if the fqdn is returned as an alias
2553 * to cope with /etc/hosts files where the first
2554 * name is not the fqdn but the short name */
2555 if (hp
->h_aliases
&& (! strchr_m(hp
->h_name
, '.'))) {
2557 for (i
= 0; hp
->h_aliases
[i
]; i
++) {
2558 if (strchr_m(hp
->h_aliases
[i
], '.')) {
2559 full
= hp
->h_aliases
[i
];
2564 if (full
&& (StrCaseCmp(full
, "localhost.localdomain") == 0)) {
2565 DEBUG(1, ("WARNING: your /etc/hosts file may be broken!\n"));
2566 DEBUGADD(1, (" Specifing the machine hostname for address 127.0.0.1 may lead\n"));
2567 DEBUGADD(1, (" to Kerberos authentication problems as localhost.localdomain\n"));
2568 DEBUGADD(1, (" may end up being used instead of the real machine FQDN.\n"));
2575 DEBUG(10,("name_to_fqdn: lookup for %s -> %s.\n", name
, full
));
2576 fstrcpy(fqdn
, full
);
2580 /**********************************************************************
2581 Append a DATA_BLOB to a talloc'ed object
2582 ***********************************************************************/
2584 void *talloc_append_blob(TALLOC_CTX
*mem_ctx
, void *buf
, DATA_BLOB blob
)
2586 size_t old_size
= 0;
2589 if (blob
.length
== 0) {
2594 old_size
= talloc_get_size(buf
);
2597 result
= (char *)TALLOC_REALLOC(mem_ctx
, buf
, old_size
+ blob
.length
);
2598 if (result
== NULL
) {
2602 memcpy(result
+ old_size
, blob
.data
, blob
.length
);
2606 uint32
map_share_mode_to_deny_mode(uint32 share_access
, uint32 private_options
)
2608 switch (share_access
& ~FILE_SHARE_DELETE
) {
2609 case FILE_SHARE_NONE
:
2611 case FILE_SHARE_READ
:
2613 case FILE_SHARE_WRITE
:
2615 case FILE_SHARE_READ
|FILE_SHARE_WRITE
:
2618 if (private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_DOS
) {
2620 } else if (private_options
& NTCREATEX_OPTIONS_PRIVATE_DENY_FCB
) {
2627 pid_t
procid_to_pid(const struct server_id
*proc
)
2632 static uint32 my_vnn
= NONCLUSTER_VNN
;
2634 void set_my_vnn(uint32 vnn
)
2636 DEBUG(10, ("vnn pid %d = %u\n", (int)sys_getpid(), (unsigned int)vnn
));
2640 uint32
get_my_vnn(void)
2645 struct server_id
pid_to_procid(pid_t pid
)
2647 struct server_id result
;
2649 #ifdef CLUSTER_SUPPORT
2650 result
.vnn
= my_vnn
;
2655 struct server_id
procid_self(void)
2657 return pid_to_procid(sys_getpid());
2660 struct server_id
server_id_self(void)
2662 return procid_self();
2665 bool procid_equal(const struct server_id
*p1
, const struct server_id
*p2
)
2667 if (p1
->pid
!= p2
->pid
)
2669 #ifdef CLUSTER_SUPPORT
2670 if (p1
->vnn
!= p2
->vnn
)
2676 bool cluster_id_equal(const struct server_id
*id1
,
2677 const struct server_id
*id2
)
2679 return procid_equal(id1
, id2
);
2682 bool procid_is_me(const struct server_id
*pid
)
2684 if (pid
->pid
!= sys_getpid())
2686 #ifdef CLUSTER_SUPPORT
2687 if (pid
->vnn
!= my_vnn
)
2693 struct server_id
interpret_pid(const char *pid_string
)
2695 struct server_id result
;
2697 #ifdef CLUSTER_SUPPORT
2699 if (sscanf(pid_string
, "%u:%d", &vnn
, &pid
) == 2) {
2703 else if (sscanf(pid_string
, "%d", &pid
) == 1) {
2704 result
.vnn
= get_my_vnn();
2708 result
.vnn
= NONCLUSTER_VNN
;
2712 if (sscanf(pid_string
, "%d", &pid
) != 1) {
2718 /* Assigning to result.pid may have overflowed
2719 Map negative pid to -1: i.e. error */
2720 if (result
.pid
< 0) {
2726 char *procid_str(TALLOC_CTX
*mem_ctx
, const struct server_id
*pid
)
2728 #ifdef CLUSTER_SUPPORT
2729 if (pid
->vnn
== NONCLUSTER_VNN
) {
2730 return talloc_asprintf(mem_ctx
,
2735 return talloc_asprintf(mem_ctx
,
2741 return talloc_asprintf(mem_ctx
,
2747 char *procid_str_static(const struct server_id
*pid
)
2749 return procid_str(talloc_tos(), pid
);
2752 bool procid_valid(const struct server_id
*pid
)
2754 return (pid
->pid
!= -1);
2757 bool procid_is_local(const struct server_id
*pid
)
2759 #ifdef CLUSTER_SUPPORT
2760 return pid
->vnn
== my_vnn
;
2766 int this_is_smp(void)
2768 #if defined(HAVE_SYSCONF)
2770 #if defined(SYSCONF_SC_NPROC_ONLN)
2771 return (sysconf(_SC_NPROC_ONLN
) > 1) ? 1 : 0;
2772 #elif defined(SYSCONF_SC_NPROCESSORS_ONLN)
2773 return (sysconf(_SC_NPROCESSORS_ONLN
) > 1) ? 1 : 0;
2783 /****************************************************************
2784 Check if offset/length fit into bufsize. Should probably be
2785 merged with is_offset_safe, but this would require a rewrite
2786 of lanman.c. Later :-)
2787 ****************************************************************/
2789 bool trans_oob(uint32_t bufsize
, uint32_t offset
, uint32_t length
)
2791 if ((offset
+ length
< offset
) || (offset
+ length
< length
)) {
2795 if ((offset
> bufsize
) || (offset
+ length
> bufsize
)) {
2802 /****************************************************************
2803 Check if an offset into a buffer is safe.
2804 If this returns True it's safe to indirect into the byte at
2806 ****************************************************************/
2808 bool is_offset_safe(const char *buf_base
, size_t buf_len
, char *ptr
, size_t off
)
2810 const char *end_base
= buf_base
+ buf_len
;
2811 char *end_ptr
= ptr
+ off
;
2813 if (!buf_base
|| !ptr
) {
2817 if (end_base
< buf_base
|| end_ptr
< ptr
) {
2818 return False
; /* wrap. */
2821 if (end_ptr
< end_base
) {
2827 /****************************************************************
2828 Return a safe pointer into a buffer, or NULL.
2829 ****************************************************************/
2831 char *get_safe_ptr(const char *buf_base
, size_t buf_len
, char *ptr
, size_t off
)
2833 return is_offset_safe(buf_base
, buf_len
, ptr
, off
) ?
2837 /****************************************************************
2838 Return a safe pointer into a string within a buffer, or NULL.
2839 ****************************************************************/
2841 char *get_safe_str_ptr(const char *buf_base
, size_t buf_len
, char *ptr
, size_t off
)
2843 if (!is_offset_safe(buf_base
, buf_len
, ptr
, off
)) {
2846 /* Check if a valid string exists at this offset. */
2847 if (skip_string(buf_base
,buf_len
, ptr
+ off
) == NULL
) {
2853 /****************************************************************
2854 Return an SVAL at a pointer, or failval if beyond the end.
2855 ****************************************************************/
2857 int get_safe_SVAL(const char *buf_base
, size_t buf_len
, char *ptr
, size_t off
, int failval
)
2860 * Note we use off+1 here, not off+2 as SVAL accesses ptr[0] and ptr[1],
2863 if (!is_offset_safe(buf_base
, buf_len
, ptr
, off
+1)) {
2866 return SVAL(ptr
,off
);
2869 /****************************************************************
2870 Return an IVAL at a pointer, or failval if beyond the end.
2871 ****************************************************************/
2873 int get_safe_IVAL(const char *buf_base
, size_t buf_len
, char *ptr
, size_t off
, int failval
)
2876 * Note we use off+3 here, not off+4 as IVAL accesses
2877 * ptr[0] ptr[1] ptr[2] ptr[3] NOT ptr[4].
2879 if (!is_offset_safe(buf_base
, buf_len
, ptr
, off
+3)) {
2882 return IVAL(ptr
,off
);
2885 /****************************************************************
2886 Split DOM\user into DOM and user. Do not mix with winbind variants of that
2887 call (they take care of winbind separator and other winbind specific settings).
2888 ****************************************************************/
2890 void split_domain_user(TALLOC_CTX
*mem_ctx
,
2891 const char *full_name
,
2895 const char *p
= NULL
;
2897 p
= strchr_m(full_name
, '\\');
2900 *domain
= talloc_strndup(mem_ctx
, full_name
,
2901 PTR_DIFF(p
, full_name
));
2902 *user
= talloc_strdup(mem_ctx
, p
+1);
2904 *domain
= talloc_strdup(mem_ctx
, "");
2905 *user
= talloc_strdup(mem_ctx
, full_name
);
2911 Disable these now we have checked all code paths
and ensured
2912 NULL returns on zero request
. JRA
.
2914 /****************************************************************
2915 talloc wrapper functions that guarentee a null pointer return
2917 ****************************************************************/
2919 #ifndef MAX_TALLOC_SIZE
2920 #define MAX_TALLOC_SIZE 0x10000000
2924 * talloc and zero memory.
2925 * - returns NULL if size is zero.
2928 void *_talloc_zero_zeronull(const void *ctx
, size_t size
, const char *name
)
2936 p
= talloc_named_const(ctx
, size
, name
);
2939 memset(p
, '\0', size
);
2946 * memdup with a talloc.
2947 * - returns NULL if size is zero.
2950 void *_talloc_memdup_zeronull(const void *t
, const void *p
, size_t size
, const char *name
)
2958 newp
= talloc_named_const(t
, size
, name
);
2960 memcpy(newp
, p
, size
);
2967 * alloc an array, checking for integer overflow in the array size.
2968 * - returns NULL if count or el_size are zero.
2971 void *_talloc_array_zeronull(const void *ctx
, size_t el_size
, unsigned count
, const char *name
)
2973 if (count
>= MAX_TALLOC_SIZE
/el_size
) {
2977 if (el_size
== 0 || count
== 0) {
2981 return talloc_named_const(ctx
, el_size
* count
, name
);
2985 * alloc an zero array, checking for integer overflow in the array size
2986 * - returns NULL if count or el_size are zero.
2989 void *_talloc_zero_array_zeronull(const void *ctx
, size_t el_size
, unsigned count
, const char *name
)
2991 if (count
>= MAX_TALLOC_SIZE
/el_size
) {
2995 if (el_size
== 0 || count
== 0) {
2999 return _talloc_zero(ctx
, el_size
* count
, name
);
3003 * Talloc wrapper that returns NULL if size == 0.
3005 void *talloc_zeronull(const void *context
, size_t size
, const char *name
)
3010 return talloc_named_const(context
, size
, name
);
3014 bool is_valid_policy_hnd(const struct policy_handle
*hnd
)
3016 struct policy_handle tmp
;
3018 return (memcmp(&tmp
, hnd
, sizeof(tmp
)) != 0);
3021 bool policy_hnd_equal(const struct policy_handle
*hnd1
,
3022 const struct policy_handle
*hnd2
)
3024 if (!hnd1
|| !hnd2
) {
3028 return (memcmp(hnd1
, hnd2
, sizeof(*hnd1
)) == 0);
3031 /****************************************************************
3032 strip off leading '\\' from a hostname
3033 ****************************************************************/
3035 const char *strip_hostname(const char *s
)
3041 if (strlen_m(s
) < 3) {
3045 if (s
[0] == '\\') s
++;
3046 if (s
[0] == '\\') s
++;